In a system and method of eddy current testing, all analog portions of an eddy current tester are generated in a probe assembly that includes a coil module and a tester module, wherein the probe assembly is inserted into a tube under inspection. The tester module supplies to the coil module analog signals that induce eddy currents in the tube under inspection and receives from the coil module analog signals produced in response to the induced eddy currents. The tester module converts the received analog signals into digital data corresponding to the induced eddy currents. Digital data, control signals, and power and ground are sent over a cable that runs between the tester module and an interface module. The cable does not carry analog signals. The data can be converted into eddy current data that can be displayed on a display.
